Unusual abdominal emergencies in childhood.
D000006:Abdomen, Acute; D001064:Appendicitis; D002648:Child; D002675:Child, Preschool; D004630:Emergencies; D006471:Gastrointestinal Hemorrhage / Q000209:etiology; D006801:Humans; D007415:Intestinal Obstruction / Q000209:etiology; D007443:Intussusception; D010123:Oxyuriasis / Q000150:complications; D010538:Peritonitis / Q000209:etiology